Chapter 1: An Introduction to VMware Virtualization
Chapter 2: Backup and Recovery Methodologies
Chapter 3: Data Recovery in Virtual Environments
A recent IDC survey of small and medium-sized business (SMB) users revealed that 67% have a recovery time requirement of less than four hours, and 31% have a recovery time requirement of less than two hours. Additionally, IDC estimates that as many as half of all organizations have insufficient business continuity and disaster recovery plans to meet business requirements, or to even survive a disaster.
Although business continuity is perhaps the top use case for cloud computing, simply focusing on this one use limits the broad potential of cloud, especially in a hybrid cloud context.
Zerto’s innovative, hypervisor-based replication is a technology developed to provide a true enterprise class, yet fully virtual-aware disaster recovery solution, to protect virtualized, mission-critical applications. This document outlines the fundamental differences between Zerto’s hypervisor-based replication and other current and legacy technologies.
The current and legacy disaster recovery solutions compared in this document include:
• Zerto Hypervisor-based Replication
• Array-based Replication with and without SRM
• Host / Guest-based Replication
• Snapshot-based Replication
• VMware Site Recovery Manager with vSphere Replication
protects virtualized applications with the same robust and effective
recovery previously available only with complex and expensive array
based replication solutions. With Zerto you get:
Zerto Offsite Backup in the Cloud
What is Offsite Backup?
Backup is a new paradigm in data protection that combines
hypervisor-based replication with longer retention. This greatly
simplifies data protection for IT organizations. The ability to leverage
the data at the disaster recovery target site or in the cloud for VM
backup eliminates the impact on production workloads.
Why Cloud Backup?
Can mission-critical apps really be protected in the cloud?
Introducing: Cloud Disaster Recovery
enterprises of all sizes are virtualizing their mission-critical
applications, either within their own data center, or with an external
cloud vendor. One key driver is to leverage the flexibility and agility
virtualization offers to increase availability, business continuity and
the cloud becoming more of an option, enterprises of all sizes are
looking for the cloud, be it public, hybrid or private, to become part
of their BC/DR solution. However, these options do not always exist.
Virtualization has created the opportunity, but there is still a
significant technology gap. Mission-critical applications can be
effectively virtualized and managed; however, the corresponding data
cannot be effectively protected in a cloud environment.
Additional Challenges for Enterprises with the Cloud:
Solutions with Zerto Virtual Replication:
Protect Applications, Not Data
How-to Guide: Application Protection and Recovery for VMware
organizations are considering a business continuity/disaster recovery
(BC/DR) solution, they need to look for a solution that not only
protects and recovers the data, but also protects and recovers the
application. Virtualized applications typically span multiple VMs and
are more complex in terms of dependencies and infrastructure. They
require recovery with write-order fidelity, something most replications
solutions do not supply
Zerto Application Protection Features:
Why Rely on Backup Shipping as Your VMware DR Solution?
people think, if you want to protect data in your virtual VMware
environment, your easiest solution is to backup VMware using snapshots
or agents. However, solutions like this, such as Veeam, can slow down
your production environment, and they are difficult to scale.
many of us understand that backup is not disaster recovery. The right
approach to a BC/DR solution is hypervisor-based replication.
With hypervisor-based replication you receive:
This paper provides technically savvy IT decision makers
with the detailed performance and resource configuration information needed to
analyze the trade-offs involved in setting up an optimal data protection and
business continuity plan to support a service level agreement (SLA) with line
of business (LoB) executives.
To test backup performance, they created 2,000 AD users and
utilized LoadGen to generate email traffic. Each user received 120 messages and
sent 20 messages over an 8-hour workday. Using this load level, we established
performance baselines for a data protection using direct SAN-based agentless VM
In this scenario they were able to :
The only way to recover a VM with full functionality and full performance without performing an explicit restore operation is through VM replication. Maintaining a replica VM, however, requires frequent and potentially expensive update processes that involve both explicit backup and implicit restore operations. To enable the extensive use of replication by IT, VMBackup adds critical optimizations to both restore and replication operations that dramatically minimize overhead on ESXi hosts and production VMs to just VM snapshot processing. Specifically, a BDR Backup server running on a VM is able to leverage hot-add SCSI transfer mode to write logical disk and logical disk snapshot files directly to a vSphere datastore, without involving the ESXi host for anything more than creating a VM snapshot.
A key a value proposition for Vembu VMBackup is its ability to directly read and write all backup and restore data directly to and from a datastore snapshot. As a result, Vembu VMBackup offloads all I/O overhead from production VMs and ESXi hosts, which is critical for maintaining an aggressive DRM strategy in a highly active virtual environment. What’s more, the performance of Vembu VMBackup in openBench lab's test environment made it possible to enhance support for a mission-critical OLTP application running on a VM using a combination of incremental backups for backup and replication. As a result, they were able to comply with a 30-minute RPO, restore the VM to a production environment in 5 minutes, and return to full-production level processing of business transactions—850 cTPS—in under 15 minutes.
VMBackup adds a new replica management module that enables an IT administrator to fully manage an initial failover and later finalize failover or failback with consolidation. In addition, BDR backup server simplifies all management functions by eliminating the need to run a separate client module on a BDR backup server, which becomes its own client within the BDR reporting hierarchy.
The ability to configure and deploy high-performance VMs within a vSphere virtual environment continues to put CIO’s under increasing pressure to deal with the rampant bête noire of IT: business continuity. What started with Line of Business (LoB) driven Service Level Agreements (SLAs) requiring IT to meet rigorous Recovery Time and Recovery Point Objectives (RTO and RPO) has grown into an auditable ISO standard (ISO22301) and an emerging software niche for Disaster Recovery Management (DRM) systems.
For this analysis, openBench Labs assessed the performance and functionality of the Vembu OffsiteDR Server, a DRM device that increases the resilience of recovery processes. Their initial intent was to examine the ability to restore data in the event of a catastrophic failure in vSphere environment, including:
The full capabilities of Vembu OffsiteDR Server, however, quickly revealed that the device had a much broader operational impact. With the installation of OffsiteDR Server on an external physical server, they were free to configure end-to-end backup and restore operations in a way that optimized RTO and RPO for all business-critical application scenarios running in vSphere test environment.
In openBench lab's test environment, the combination of Vembu OffsiteDR Server deployed on a physical server with a Vembu BDR Backup server deployed on a VM provided a value proposition that extended far beyond the enhancement of DRM recovery resilience. With OffsiteDR Server installed on a physical server, they were able to optimally leverage VM and physical server platforms to easily implement all of the data protection functionality provided by Vembu BDR Suite, leverage all of the performance optimizations available to VMs in a vSphere environment, and do so in the most cost-effective system configuration.
Backup is just not about storage. It’s the intelligence on top of storage. Typically when businesses think of backup, they see it as a simple data copy from one location to another. Traditional file systems would suffice if the need were to just copy the data. But backup is the intelligence applied on top of storage where data can be put to actual use. Imagine the ability to use backup data for staging, testing, development and preproduction deployment. Traditional file systems are not designed to meet such complex requirements.
With the advent of information technology, more and more organizations are relying on IT for running their businesses. They cannot afford to have downtime on their critical applications and need instant access to data in the event of disaster. Hence, a new type of file system is necessary to satisfy this need.
VembuHIVETM manages the metadata smartly through its patent-pending technology, in a way that is agnostic to the file system of the backup, which is why we call VembuHIVETM, a file system of file systems. This helps the backup application to instantly associate the data in VembuHIVETM to any file system metadata, thereby allowing on-demand file or image restores in many possible file formats. The data and metadata storage, harness cluster file system and computing and storage.
This is a really powerful concept that will address some very interesting use cases not just in the backup and recovery domain but also in other domains, such as big-data analytics.
The key to the design of VembuHIVETM is its novel mechanism to capture and generate appropriate metadata and store it intelligently in a cloud infrastructure. The increment data (the changes with respect to a previous version of the same backup) are treated like versions in a version control system (CVS, GIT). This revolutionary way of data capture and metadata generation provides seamless support to a wide range of complex restore use cases.